Improvement in drag-bars for grain-drills



, THOMAS & MAST.

Seed-Drill Teeth. N9. 48,112. Patented June 6, 1865.

lnventon W|tnesses= l RN PROCESS) UNIT D STATES PATENT OFFICE.

J. THOMAS AND P. P. MAST, OF SPRI NGF IELD, OHIO.

'IMPROVEMENT IN DRAG-BARS FOR GRAIN-DRILLS.

Specification forming part of Letters Patent No. 48,1 l2, dated June 6, 1865.

To all whom it may concern.-

Be it known that we, J. H. THOMAS and P. P.MAST, of Springfield, in the county of Clarke and State of Ohio, have invented a new and 1m proved Drag-Bar and Tooth for Seed-Drills; and we do hereby declare the following to be a full, clear, and exact description of the same,

reference being had to the accompanying draw lug, making a part of this specification, the same letter referring to the same part wherever it occurs.

The nature of our invention consists in such an arrangement and construction of parts as shall permit the use of an arm or brace to support the drill-tooth when being drawn forward without permitting the said brace or armjto drop down it the wooden pin is broken. I That others may understand the construction and operation of our invention, we will particularly describe it.

A is the drag-bar, constructed of two'fla't strips of iron laid side by side and securedin that position,but only touching at one point,

The arm F has in its upper end suitable holes, through which a wooden pin is inserted to sup port the tooth E in the desired position. The arm F is attached to the tooth by being fat-stened at its lower end between two lugs, one of which is shown removed by the drawings. The space between the lugs is of the form represented-z'. 6., the metal is left between them on the upper side sufficient to fill out to a line which would coincide, it prolonged, with the face 0. A shoulder is thereby formed at 1', against which the upper edge of the arm F rests at the same time that it rests against the face 6. With this arrangement a single'pin through the lower end of the arm F and the lugs, as at g, is sufficient to secure said arm F in the required position, or so that it will not drop down when the wooden pin is broken. The lower end of the arm F is slightly elongated and beveled downward, as shown, in such a manner that the above-named security from turning on the pin y will be increased.

Having described our invention, what we Patent, is-

claim as new, and desire to secure by Letters So constructing the arm F and lugs 73 that i when the pin 9 is in place the said arm will be maintained in position in contactwith the face a, substantially as set forth.

J. H. THOMAS. P. I. MAST. Witnesses:

H. S. SHOWERS, GEo. ARTHUR. 

